iPhone 6 6s Battery Charging Case 3200mAh Ultra Slim Apple MFI Certified Black Apple MFi Certification: approved by Apple working with all functions of iPhone 6S/6. Complete charge and Sync compatible with iOS 9+ and future iOS software updates. Ultra slim: 360 scratch-guard protection minimizes bulk and weight for iPhone 6S/ 6 charger case. It is convenient enough to fit easily in your hand or pocket. 130% Longer battery life: 3200mAh power capacity increases talk time up to 25 hours, Internet use up to 18 hours on LTE, and even longer audio and video playback. Impact Protection: A+ Lithium-Ion battery with over 500 battery charge cycles; Over 5 QC processes. Supports over-charged, over-discharged, over-voltage, over-current and short-circuit protection to protect your devices. How to identifiy the real MFI on Apple's website: Enter the EAN code at the back side of the case you can search it under the website "mfi.apple.com/MFiWeb/getAPS.action" The Brand and EAN code and Model number must match each.